1.

1. If we change + to - and-to +, what is the value of +9-8-7+6-5-4+3+2+1?​

Answer»

-STEP EXPLANATION:-1-7+6-5-4+3+2+1-8+6-5-4+3+2+1-2-5-4+3+2+1-7-4+3+2+1-11+3+2+1-8+2+1-6+1-5



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